PSYB51H3 Chapter 4: Chapter 4 Notes
Document Summary
E. g. a house, simple cortical cells only see high contrast lines. Middle (midlevel) vision: stage in seeing, after basic features are interpreted (early vision). E. g. how we a snowman"s edge"s don"t belong to the house. Recognition must involve matching what we see to memory. Goal is to sort elements in scene into groups that we see as objects. Can"t assume lines that touch each other are objects b/c they overlap. We fill in edges even when colours may be the same and there are gaps. Illusory contour: when we see edges that aren"t actually connected. Structuralism: complex perception can be understood by analyzing components. I. e. perceptions are made of atoms from sensation (colour, orientation) See perception as built up from local sensations of atoms. Illusory contour disproves b/c gaps (can"t have atoms) can be seen as having edges. Gestalt: whole is > sum of sensory parts. German means form, everything has form, but we cannot always see it.
